Table 2-12. PIO Signal List Figure 2-25. DQS Routing PIO The PIO contains four blocks:" />
參數(shù)資料
型號： LFEC3E-5QN208C
廠商： Lattice Semiconductor Corporation
文件頁數(shù)： 82/163頁
文件大小： 0K
描述： IC FPGA 3.1KLUTS 145I/O 208-PQFP
標準包裝： 48
系列： EC
邏輯元件/單元數(shù)： 3100
RAM 位總計： 56320
輸入/輸出數(shù)： 145
電源電壓： 1.14 V ~ 1.26 V
安裝類型： 表面貼裝
工作溫度： 0°C ~ 85°C
封裝/外殼： 208-BFQFP
供應(yīng)商設(shè)備封裝： 208-PQFP（28x28）
2-22
Architecture
LatticeECP/EC Family Data Sheet
Table 2-12. PIO Signal List
Figure 2-25. DQS Routing
PIO
The PIO contains four blocks: an input register block, output register block, tristate register block and a control logic
block. These blocks contain registers for both single data rate (SDR) and double data rate (DDR) operation along
with the necessary clock and selection logic. Programmable delay lines used to shift incoming clock and data sig-
nals are also included in these blocks.
Name
Type
Description
CE0, CE1
Control from the core
Clock enables for input and output block FFs.
CLK0, CLK1
Control from the core
System clocks for input and output blocks.
LSR
Control from the core
Local Set/Reset.
GSRN
Control from routing
Global Set/Reset (active low).
INCK
Input to the core
Input to Primary Clock Network or PLL reference inputs.
DQS
Input to PIO
DQS signal from logic (routing) to PIO.
INDD
Input to the core
Unregistered data input to core.
INFF
Input to the core
Registered input on positive edge of the clock (CLK0).
IPOS0, IPOS1
Input to the core
DDRX registered inputs to the core.
ONEG0
Control from the core
Output signals from the core for SDR and DDR operation.
OPOS0,
Control from the core
Output signals from the core for DDR operation
OPOS1 ONEG1
Tristate control from the core
Signals to Tristate Register block for DDR operation.
TD
Tristate control from the core
Tristate signal from the core used in SDR operation.
DDRCLKPOL
Control from clock polarity bus
Controls the polarity of the clock (CLK0) that feed the DDR input block.
PIO A
PIO B
PADA "T"
PADB "C"
PIO B
PIO A
PIO B
PIO A
Assigned
DQS Pin
DQS
sysIO
Buffer
LVDS Pair
PADA "T"
PADB "C"
LVDS Pair
PADA "T"
PADB "C"
LVDS Pair
PIO A
PIO B
PADA "T"
PADB "C"
LVDS Pair
PIO A
PIO B
PADA "T"
PADB "C"
LVDS Pair
PIO A
PIO B
PADA "T"
PADB "C"
LVDS Pair
PIO A
PIO B
PADA "T"
PADB "C"
LVDS Pair
PIO A
PIO B
PADA "T"
PADB "C"
LVDS Pair
Delay
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